(I'm really sorry everyone, I didn't want to prevent theft, but the readers of the VIP group were angry with the grandson last night, they said that this was a violation of their rights, and the gourd was also entangled!) Please re-download it forty minutes after the update, I didn't want to be so troublesome. ）

"Argon is an inert gas, and we are clear about the protective effect on both sides of the weld of metal parts during the welding process, but the general welding process is not possible on the aero engine with a harsh working environment. Aero engine is the equipment with the highest precision requirements, the harshest working environment, and long enough service life requirements in the world. Under the questioning of Qi Hai and others, Liu Yijiu specially convened all the technical personnel for a technical discussion meeting.

Whether the quality problems in their engines were caused by welding problems has been debated.

Simon Love's words, for everyone, are not credible.

Although the industrial base of the republic came from the Soviet Union, Sino-Soviet relations have been very bad since the Soviet Union completely withdrew its experts from China in the early sixties, burned technical data, and added border frictions.

Simonov happened to be from the Soviet Union.

Director Liu obviously has a deep knowledge of engine design, but he does not understand the manufacturing process of the engine very well.

Here, Wuyuan Kong, who is responsible for engine manufacturing, is directly required to be remanufactured according to his process requirements, and the key welding points of all key components must be welded in the pressurized cabin. Then calibrate the equipment outside, and naturally there will be resistance.

"Director Liu, that's not right. Compared with aerospace engines, aero engines are still much worse. Although we are engaged in aviation...... "Wuyuankong does not think that the technical requirements of space engines are higher than those of aerospace rocket engines.

"Hehe, I think I have more right to speak. I didn't invite experts in space engines to come over today, otherwise they would have agreed with me. Aero engines are complex, more demanding, and have a harsher working environment. That's because, aero engines need to be reused, and space engines. It's basically just a one-shot deal! If the engine of an ICBM needs to run for tens or hundreds of hours, I must be wrong, unless the rocket we are working on needs to hit the moon directly......"

Liu Yijiu's words caused many people to laugh low.

But this word. That's definitely a little wrong. Because that's just the way it is.

Under normal circumstances, the space engine used on the ICBM can be used for more than two hours, which is already relatively against the sky. In an hour and 3,600 seconds, ICBMs will exceed Mach 7 at a speed of more than Mach 7, that is, about two and a half kilometers per second, even if they have a range of 8,000 meters. It only took an hour to fly. The engine has been used for so short a time.

In such a situation. As long as these engines carry through this time, there will be no problems.

The aero engine is different, take the most familiar AL-31 as an example, the minimum service life needs to reach 1000 hours, even if the vector nozzle behind it, it also needs to reach 500 hours of service life, and when the 1000 hours engine overhaul time is reached, the vector nozzle needs to be replaced once.

"That's just as well. However, the output power of the aerospace engine is higher, which is obviously different from the technical requirements of the engine. "Someone in Factory 132 raised objections.

"I said, guys, are you space systems or aviation systems? Why do you always think that other people's technical requirements are higher? In this case, people have higher technical requirements, and people can do it, why can't you do it? "Liu Yijiu is a little angry.

I don't know what these guys think.

"In the current situation, since we can't find the crux of the problem and improve the quality, there is no need to waste time on this matter. What is time for us? Liu Yijiu's mood is obviously because these technicians always feel that other people's are more difficult, but there is no way to do it well and become bad.

They are not expressing their admiration for the technicians in space engines, but they are resisting Liu Yijiu.

Even though the 611 Institute is under the jurisdiction of the Ninth Academy, they also joined the Ninth Academy later, and they usually have little contact time with Liu Yijiu, as if Liu Yijiu can intervene in everything.

Technicians are like this, they will not be convinced because of the high level of the other party.

Liu Yijiu is too young and incomprehensible to them for pointing fingers at the key manufacturing process of the engine.

Unless Liu Yijiu can use facts to speak with facts, as the designers of the 611 Institute conquered in terms of aircraft design, and use the final results to prove that there is nothing wrong with his method, then there will be no problems.

"Arguing all day long, from the discovery of the problem to the present, a few months have passed, you have not come up with an effective solution, and now put forward a solution, whether it is useful or not, it is also an experiment, if it succeeds, it solves the problem, even if it is not successful, it cannot solve the difficulties we encounter, then, it is also an experience, dry technology, can not always do the things in front of you according to your own ideas and the old experience of the past! If so, how will our technology evolve? Liu Yijiu obviously became more and more angry the more he talked.

The people below saw that Liu Yijiu was angry, so they could only avoid his edge, otherwise the other party would directly let the project go off, and they would return to the situation when the turbofan was dismounted six times, especially the people of the 132 factory, and they did not dare to offend Liu Yijiu in the slightest.

Many of the R&D tasks of Factory 132 are now from the Ninth Academy, not from the Ministry of Aviation Industry.

Their civilian business is not too hot now, and in terms of fighters, it is because the Ninth Academy has two fighters that are being designed, and they have not continued to engage in new projects as in the original history, and began to demonstrate the Jian-10 fighter project.

The only business is to improve the design of the J-7, which is heavily equipped in China.

"Director Liu, from today onwards, we will assemble according to the process you provided...... Qi Hai and Wu Yuankong were also worried that Liu Yijiu would have an impact on the future development of the project because of his youth and vigor, and after glancing at each other, he said to Liu Yijiu.

They weren't convinced.

If a new engine had not been assembled and good results had been obtained on the air platform for test flights, Liu Yijiu would never have listened to everything.

The technical standards were proposed by Liu Yijiu, and the performance parameters of the turbofan-8 engine were also proposed by Liu Yijiu, but the design was indeed modified by Qi Hai and others with reference to Liu Yijiu's opinions.

Liu Yijiu personally participated in the engine assembly process of the new process, but he did not have the ability to do it, obviously not able to compare with those senior fitters who were at least level seven, but on the side of the technical guidance.

The new process is very different from the previous one, after all, the process of producing jet engines in China has just begun.

Compared with the United States and the Soviet Union, the difference is not a little bit.

Many of the previous piston engine production technologies cannot be used in the current production process.

In the initial assembly process, it is not too complicated, although the precision requirements are high, under the assembly of many eighth-level or even nine-level fitters, it is not a problem at all.

However, when welding in the pressurized chamber, a new problem was encountered - a welding technician in his fifties fainted after only an hour of working in the pressurized chamber!

This made Qi Hai, who was guarding the side, panic.

Liu Yijiu was originally discussing the blade design and production improvement plan with Wuyuankong, and after hearing the news, he also rushed over.

If someone dies, it's not going to be easy.

When Liu Yijiu rushed over, the unconscious skilled worker had just woken up, which made Liu Yijiu breathe a sigh of relief.

Upon inquiry, I learned that this was poisoned by rigid empiricism.

"Then change to the younger one! The atmospheric pressure inside the pressurized plant is twice as high as that outside, and you have to wear protective clothing, and your physical strength can't keep up, and your body can't adapt to it. Didn't you get trained before you got inside the pressurized cabin? ”

"Let them put on protective clothing and work......"

"For how long?"

"Two hours a day, one hour at a time......"

Liu Yijiu suddenly wanted to give the management of Factory 132 a kick.

Can it be done in an hour?

"If you are between thirty and forty years old, you have to work in the pressurized chamber for at least two to three hours each time, can you do this?" But now is not a question of who is responsible.

The managers of Factory 132 were a little embarrassed, "Director Liu, those skilled workers in their thirties to forties don't have such good skills. It's not what you said, in the trial production process, all the assembly needs to use the top professional and technical workers, not to mention, these welds are very demanding, not experienced enough, there is no way to meet the requirements......"

"Why are you so rigid? A welder of about forty years, who has been working for twenty years or even longer, will still have no experience? "Liu Yijiu was speechless." Gather all the middle-aged welders with good skills, put on protective clothing and work outside, and in half a month, you will be able to know which ones are competent for the work of the pressurized cabin. Once you pass the selection, your salary and bonus will be increased by three levels, and you will have to work for four hours a day! This is one of the key processes in the entire engine assembly, and there is absolutely no room for error! Moreover, experienced skilled workers, who are our wealth, cannot be used to do these things! Liu Yijiu really wanted to reprimand this bastard, but he was not the manager of his Ninth Academy.

The manager wanted to say something, but was stopped by Zhao Liangbi, who had just arrived.

Besides, you have to provoke Liu Yijiu to get angry.

(To be continued.) )